if my idm or something pcm bad injector etc..... was getting weak or starting to need the idm mod would the truck not pull very well?? cause my bosses 4 door 01 pulls twice as good as mine i mean with 2 commercial lawn mowers 2 blows and a double axle trailer with gratted ramp for mowers it struggles... and also have two horse bumper pull heavy duty steal trailer and with 2 horses up a pretty decent hill it downshifts revs really high and doesnt increse the speed it will loose some speed... is this something bad or what kinda frustrates me the 01 just pulls so much better than my truck and he just has exhaust i have intake and exhaust
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